Hello I need help in my math 12: {x, y,z} ? {a, b,c} is it equal or not?

13: {0} ? { } equal or not?

Please help no spam no links I need help mark brainliest!!

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2